This is a Roku device that plugs into a modem powered by Xfinity and to the back of the TV. The Roku device is 3810x. What happens is the TV will start up, show my TV logo, load Roku home screen. Now is when the remote won't work; no up-down buttons work. no side button works. The home button on the remote won't turn the TV off.
@124rreimann The Roku 3810 Streaming Stick uses a long range adapter cable to work. That cable is to boost your WiFi signal. It also is how your remote works. It that cable is faulty your remote will not work. Unfortunately the cable is $20 and out of stock. Your only choice is to purchase a new Roku device.
Another option you can try is to download the Roku Remote Control app to your smartphone. Be sure it’s the official app made by Roku. Once you sign into the app you can control your Roku. You won’t be able to turn the tv on or off though so use your TV remote for that. If you can control your Roku using the app on your phone that means your Roku is good and the cable is good. The remote is no good. When your on your Roku Home Screen does it show a clock in the top right? Or not connected?
The home button on the remote doesn’t turn off your TV. The power button does